From 00c76e785c3fbf4ca3464b16be1808dc2f52ae90 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sat, 17 Feb 2024 15:01:58 +0100
Subject: [PATCH] Add Lua binding to query current editor-mixer route

https://discourse.ardour.org/t/lua-editor-mixer-strip/109886
---
 gtk2_ardour/editor.h        | 2 ++
 gtk2_ardour/editor_mixer.cc | 9 +++++++++
 gtk2_ardour/luainstance.cc  | 2 ++
 gtk2_ardour/public_editor.h | 2 ++
 4 files changed, 15 insertions(+)

diff --git a/gtk2_ardour/editor.h b/gtk2_ardour/editor.h
index aa7938b334..71aad5fb1e 100644
--- a/gtk2_ardour/editor.h
+++ b/gtk2_ardour/editor.h
@@ -295,6 +295,8 @@ public:
 	void set_selection (std::list<Selectable*>, Selection::Operation);
 	void set_selected_midi_region_view (MidiRegionView&);
 
+	std::shared_ptr<ARDOUR::Route> current_mixer_stripable () const;
+
 	bool extend_selection_to_track (TimeAxisView&);
 
 	void play_selection ();
diff --git a/gtk2_ardour/editor_mixer.cc b/gtk2_ardour/editor_mixer.cc
index c99a819683..4f5ed4cf81 100644
--- a/gtk2_ardour/editor_mixer.cc
+++ b/gtk2_ardour/editor_mixer.cc
@@ -176,6 +176,15 @@ Editor::show_editor_mixer (bool yn)
 #endif
 }
 
+std::shared_ptr<ARDOUR::Route>
+Editor::current_mixer_stripable () const
+{
+	if (current_mixer_strip) {
+		return current_mixer_strip->route ();
+	}
+	return std::shared_ptr<ARDOUR::Route> ();
+}
+
 #ifdef __APPLE__
 void
 Editor::ensure_all_elements_drawn ()
diff --git a/gtk2_ardour/luainstance.cc b/gtk2_ardour/luainstance.cc
index 0de6a24078..f2c5fe0966 100644
--- a/gtk2_ardour/luainstance.cc
+++ b/gtk2_ardour/luainstance.cc
@@ -912,6 +912,8 @@ LuaInstance::register_classes (lua_State* L, bool sandbox)
 		.addFunction ("get_cut_buffer", &PublicEditor::get_cut_buffer)
 		.addRefFunction ("get_selection_extents", &PublicEditor::get_selection_extents)
 
+		.addFunction ("current_mixer_stripable", &PublicEditor::current_mixer_stripable)
+
 		.addFunction ("set_selection", &PublicEditor::set_selection)
 
 		.addFunction ("play_selection", &PublicEditor::play_selection)
diff --git a/gtk2_ardour/public_editor.h b/gtk2_ardour/public_editor.h
index 507bc6e7bb..e474b95dfb 100644
--- a/gtk2_ardour/public_editor.h
+++ b/gtk2_ardour/public_editor.h
@@ -242,6 +242,8 @@ public:
 	virtual void set_selection (std::list<Selectable*>, Selection::Operation) = 0;
 	virtual void set_selected_midi_region_view (MidiRegionView&) = 0;
 
+	virtual std::shared_ptr<ARDOUR::Route> current_mixer_stripable () const = 0;
+
 	virtual bool extend_selection_to_track (TimeAxisView&) = 0;
 	virtual void play_solo_selection(bool restart) = 0;
 	virtual void play_selection () = 0;